Sizing-tool for lathes



(No Model.)

J. FLOWER.

SIZING TOOL FOR LATHES.

No. 259,377. Patented June 13, 1882.

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UNITED STATES;

PATENT rrrcn.

JAMES FLOWER, OF DETROIT, MICHIGAN.

SIZING-TOOL FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 259,377, dated June 13, 1882.

Application filed February 21, 1882.

To all whom it may concern:

Be it known that I, JAMES FLOWER, of Detroit, county of Wayne, State ofMichigamhave invented a new and useful Improvement in Siz in g-Tools for Lathes and I declare the followin g to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which form a part of this specification, and wherein- Figure l is a perspective view of my sizingtool. Fig. 2 is a horizontal central section thereof. Fig. 3 is a cross-section of one of the cutting-tools, showing the manner of fastening it to the tool-holder or face-plate. Fig. at is a diagram showing the relative positions of cutting-tools and stcadying-supports.

In a patent granted to me December 6, 1881, andnumbered250,5l4,Ihave described aturretlathe provided with a monitor-head capable of holding a multiplicity of tools, so that in turning the metal castings the thread is cut or the casting trimmed without removing the tool from its socket.

The object of my invention is to provide a tool for said monitor head, especially adapted for sizing castings, and doing it in a very expeditious and always uniform manner, allowing at the same time a simple and quick adjustment of the cutting-tools.

In the drawings, A is a face-plate provided with the central orifice, B.

O is a support, to which, at one end, the faceplate is attached in any convenient manner, while the other end terminates into a shank, D, for securing the tool into the lathe-head.

E E are cutting-tools sunk into proper recesses of the face-plate and upon opposite sides thereof, with their cutting edges extending within the orifice B. They are held in place by the wedge-headed bolts F F, which pass through the faceplate A, and are providedon the rear side thereof with the nuts to. The side of the cutting-tools which comcsin contact with the wedge-shaped heads of the bolts is similarly shaped, so as to allow the bolts to hold the cutting-tools very firmly.

G are steadying pins or posts sunk into the face-plate at right angles to the cutting-tools, one above and one below the center. They are adjustably secured within their recesses,

(No model.)

in the same manner as the cutting-tools, by similar bolts, H H.

The cutting-tools E E are not arranged radially upon the face-plate A, but are parallel to each other, one above and the other below a horizontal plane passing through the axial center of the tool-hold er, and as their cuttingedges are presented in opposite direction they are thus enabled to work simultaneously upon the revolving and advancing casting.

In practice the castingto be sized is revolved by the live-spindle, and the tool being advanced with the lathe-head the two cutting-tools E E can very rapidly size the casting, as they both out at the same time, and as they also work in the same vertical plane and upon opposite sides they tend to steady the work.

For relatively long or slender castings, where there may be danger of bending or springing the same, I use the steadying-posts G G in combination with the cutting tools. Fig. 4 shows in adiagram the action of the steadyingposts, whose inner ends are shown to steady the casting at the sized part, and as near to the unsized as possible, so as to come into action as soon as the cutting-tools begin to work.

The support 0 may be made in the form of a yoke, or, as shown in the drawings, in form of a hollow tube, which gives to the tool the requisite stiffness, if the same has to be made comparatively long, to allow the sized portion of the casting to enter. Proper holes have then to be provided to let the turnings fall out.

Although I get the full benefit of my tool by using it in a monitor lathe-head, I do not intend to confine myself to such use only, as the tool may be used with equal benefit on any lathe provided with a latl1e-head adapted to be advanced and retracted.

I'am aware that screw-cutting tools have been supplied with cutting and steadying attachments secured to a rotating head, and I do not claim such invention.

What I claim is- 1. The support 0, provided with a faceplate, A, having recesses, two of which are radial to the center, and the other two, one above and the other below said center, in combination with tools having cutting-edges on opposite sides to each other, and steadying-posts having smooth bearing-surfaces, both the cutters and the steadying-posts being firmly secured in the recesses in the face-plate, with the working-edges of the cutters in advance of the bearing-surfaces of the steadying-posts, substantially as and for the purpose specified.

2. The support 0, having openings to allow of the escape of the turnings, in combination with the recessed face-plate A, cutters E, secured to said faceplate, and the steadyingposts Gr, also secured to the face-plate, and having their bearing-surfaces at the rear of the cutting-edges of the cutters E, substantially as and for the purpose specified.

3. Thesupport O,provided with a face-plate,

A, having recesses to receive the tools E G, and having ahole with one inclined side opening into each of the recesses, incombination with the tools E G, having an inclined side adjoining the holes in the face-plate, the sliding bolts F, having inclined sides to come in contact with the inclined sidesof the tools and the holes adjoining the tool-recesses, and the nuts a, for operating said sliding bolts, substantially as and for the purpose specified.

JAMES FLOWER.

Witnesses JAMES WILsoN, J AMES SGALLON. 

